Fix issues in the example configs (#14601)

For some reason, it had multiple syntax errors and other issues, like
undefined options. Would be great to add a test for sourcing all example
configs, but I don't know rust

See also
https://github.com/nushell/nushell/pull/14249#discussion_r1887192408

<!--
if this PR closes one or more issues, you can automatically link the PR
with
them by using one of the [*linking
keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword),
e.g.
- this PR should close #xxxx
- fixes #xxxx

you can also mention related issues, PRs or discussions!
-->

CC @NotTheDr01ds

crates/nu-utils/src/default_files/sample_config.nu

@@ -1,6 +1,9 @@
-# Nushell Config File
+# Nushell Sample Config File
 #
-# version = "0.99.2"
+# Warning: This file is intended for documentation purposes only and
+# is not intended to be used as an actual configuration file as-is.
+#
+# version = "0.100.1"
 #
 # A `config.nu` file is used to override default Nushell settings,
 # define (or import) custom commands, or run any other startup tasks.
@@ -86,14 +89,14 @@ $env.config.recursion_limit = 50
 # ---------------------------
 
 # edit_mode (string) "vi" or "emacs" sets the editing behavior of Reedline
-edit_mode: "emacs"
+$env.config.edit_mode = "emacs"
 
 # Command that will be used to edit the current line buffer with Ctrl+O.
 # If unset, uses $env.VISUAL and then $env.EDITOR
 #
 # Tip: Set to "editor" to use the default editor on Unix platforms using
 #      the Alternatives system or equivalent
-buffer_editor: "editor"
+$env.config.buffer_editor = "editor"
 
 # cursor_shape_* (string)
 # -----------------------
@@ -145,7 +148,7 @@ $env.config.completions.use_ls_colors = true
 # completions.external.*: Settings related to completing external commands
 # and additional completers
 
-# external.exnable (bool)
+# external.enable (bool)
 # true: search for external commands on the Path
 # false: disabling might be desired for performance if your path includes
 #        directories on a slower filesystem
@@ -206,8 +209,8 @@ $env.config.shell_integration.osc9_9 = false
 # osc8 (bool):
 # When true, the `ls` command will generate clickable links that can be launched in another
 # application by the terminal.
-# Note: This setting replaces the now deprecated `ls.show_clickable_links`
+# Note: This setting replaces the now deprecated `ls.clickable_links`
-$env.config.shell.integration.osc8: true
+$env.config.shell_integration.osc8 = true
 
 # Deprecated
 # $env.config.ls.clickable_links = true
@@ -389,7 +392,7 @@ $env.config.float_precision = 2
 # ls.use_ls_colors (bool):
 # true: The `ls` command will apply the $env.LS_COLORS standard to filenames
 # false: Filenames in the `ls` table will use the color_config for strings
-$env.config.ls = true
+$env.config.ls.use_ls_colors = true
 
 # Hooks
 # -----
@@ -402,12 +405,19 @@ $env.config.ls = true
 # WARNING: A malformed display_output hook can suppress all Nushell output to the terminal.
 #          It can be reset by assigning an empty string as below:
 
-$env.config.hooks.pre_prompt = []          # Before each prompt is displayed
+# Before each prompt is displayed
-$env.config.hooks.pre_execution = []       # After <enter> is pressed; before the commandline
+$env.config.hooks.pre_prompt = []
-                                           # is executed
+# After <enter> is pressed; before the commandline is executed
-$env.config.hooks.env_change = []          # When a specified environment variable changes
+$env.config.hooks.pre_execution = []
-$env.config.hooks.display_output = ""      # Before Nushell output is displayed in the terminal
+# When a specified environment variable changes
-$env.config.hooks.command_not_found = []   # When a command is not found
+$env.config.hooks.env_change = {
+    # run if the PWD environment is different since the last repl input
+    PWD: [{|before, after| null }]
+}
+# Before Nushell output is displayed in the terminal
+$env.config.hooks.display_output = "if (term size).columns >= 100 { table -e } else { table }"
+# When a command is not found
+$env.config.hooks.command_not_found = []
 
 # -----------
 # Keybindings
@@ -480,27 +490,22 @@ $env.config.menus ++= [
 # Plugin behavior
 # ---------------
 # Per-plugin configuration. See https://www.nushell.sh/contributor-book/plugins.html#configuration.
-plugins: {}
 $env.config.plugins
+
+# Configuration for plugin garbage collection
 $env.config.plugin_gc
 $env.config.plugin_gc.default
+# true to enable stopping of inactive plugins
 $env.config.plugin_gc.default.enabled
+# How long to wait after a plugin is inactive before stopping it
 $env.config.plugin_gc.default.stop_after
-$env.config.plugin_gc.plugins
+$env.config.plugin_gc.plugins = {
-    plugin_gc: {
+  # Alternate configuration for specific plugins, by name, for example:
-        # Configuration for plugin garbage collection
-        default: {
-            enabled: true # true to enable stopping of inactive plugins
-            stop_after: 10sec # how long to wait after a plugin is inactive to stop it
-        }
-        plugins: {
-            # alternate configuration for specific plugins, by name, for example:
   #
   # gstat: {
   #     enabled: false
   # }
 }
-    }
 
 
 # -------------------------------------
@@ -914,10 +919,10 @@ const NU_PLUGIN_DIRS = $NU_PLUGIN_DIRS ++ [($nu.default-config-dir | path join '
 # Because of the previous ENV_CONVERSIONS (performed internally
 # before your config.nu loads), the path variable is a list that can
 # be appended to using, for example:
-$env.path ++= "~/.local/bin"
+$env.PATH ++= [ "~/.local/bin" ]
 
 # Or prepend using
-$env.path = "~/.local/bin" ++ $env.path
+$env.PATH = [ "~/.local/bin" ] ++ $env.PATH
 
 # The `path add` function from the Standard Library also provides
 # a convenience method for prepending to the path:

crates/nu-utils/src/default_files/sample_env.nu

@@ -1,5 +1,7 @@
 # Sample Nushell Environment Config File
 #
+# version = "0.100.1"
+#
 # Previously, environment variables were typically configured in `env.nu`.
 # In general, most configuration can and should be performed in `config.nu`
 # or one of the autoload directories.

crates/nu-utils/src/default_files/sample_login.nu

@@ -1,4 +1,7 @@
 # Example Nushell Loginshell Config File
+#
+# version = "0.100.1"
+#
 # - has to be as login.nu in the default config directory
 # - will be sourced after config.nu and env.nu in case of nushell started as login shell
 

crates/nu-utils/src/default_files/scaffold_config.nu

@@ -1,5 +1,8 @@
 # config.nu
 #
+# Installed by:
+# version = "0.100.1"
+#
 # This file is used to override default Nushell settings, define
 # (or import) custom commands, or run any other startup tasks.
 # See https://www.nushell.sh/book/configuration.html

crates/nu-utils/src/default_files/scaffold_env.nu

@@ -1,5 +1,8 @@
 # env.nu
 #
+# Installed by:
+# version = "0.100.1"
+#
 # Previously, environment variables were typically configured in `env.nu`.
 # In general, most configuration can and should be performed in `config.nu`
 # or one of the autoload directories.